dsync: If dsync fails in any way, don't increase mailboxes' next_uid/highestmodseq.
dsync: If dsync fails in any way, don't increase mailboxes' next_uid/highestmodseq.

--HG--
branch : HEAD

dscho/dovecot,dscho/dovecot,dscho/dovecot,dscho/dovecot,dscho/dovecot